diff options
Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/boot.txt | 7 | ||||
| -rw-r--r-- | Documentation/x86/early-microcode.txt | 11 |
2 files changed, 9 insertions, 9 deletions
diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt index 3840b6f..fc66d42 100644 --- a/Documentation/x86/boot.txt +++ b/Documentation/x86/boot.txt @@ -657,9 +657,10 @@ Protocol: 2.08+ uncompressed data should be determined using the standard magic numbers. The currently supported compression formats are gzip (magic numbers 1F 8B or 1F 9E), bzip2 (magic number 42 5A), LZMA - (magic number 5D 00), and XZ (magic number FD 37). The uncompressed - payload is currently always ELF (magic number 7F 45 4C 46). - + (magic number 5D 00), XZ (magic number FD 37), and LZ4 (magic number + 02 21). The uncompressed payload is currently always ELF (magic + number 7F 45 4C 46). + Field name: payload_length Type: read Offset/size: 0x24c/4 diff --git a/Documentation/x86/early-microcode.txt b/Documentation/x86/early-microcode.txt index 4aaf0df..d62bea6 100644 --- a/Documentation/x86/early-microcode.txt +++ b/Documentation/x86/early-microcode.txt @@ -11,7 +11,8 @@ file and loaded to CPUs during boot time. The format of the combined initrd image is microcode in cpio format followed by the initrd image (maybe compressed). Kernel parses the combined initrd image during boot time. The microcode file in cpio name space is: -kernel/x86/microcode/GenuineIntel.bin +on Intel: kernel/x86/microcode/GenuineIntel.bin +on AMD : kernel/x86/microcode/AuthenticAMD.bin During BSP boot (before SMP starts), if the kernel finds the microcode file in the initrd file, it parses the microcode and saves matching microcode in memory. @@ -34,10 +35,8 @@ original initrd image /boot/initrd-3.5.0.img. mkdir initrd cd initrd -mkdir kernel -mkdir kernel/x86 -mkdir kernel/x86/microcode -cp ../microcode.bin kernel/x86/microcode/GenuineIntel.bin -find .|cpio -oc >../ucode.cpio +mkdir -p kernel/x86/microcode +cp ../microcode.bin kernel/x86/microcode/GenuineIntel.bin (or AuthenticAMD.bin) +find . | cpio -o -H newc >../ucode.cpio cd .. cat ucode.cpio /boot/initrd-3.5.0.img >/boot/initrd-3.5.0.ucode.img |